├── .gitignore
├── README.md
├── SimpleCalculator.xcodeproj
    ├── project.pbxproj
    ├── project.xcworkspace
    │   └── contents.xcworkspacedata
    └── xcuserdata
    │   └── alex.xcuserdatad
    │       └── xcschemes
    │           └── xcschememanagement.plist
├── SimpleCalculator
    ├── AppDelegate.swift
    ├── Assets.xcassets
    │   └── AppIcon.appiconset
    │   │   └── Contents.json
    ├── Base.lproj
    │   ├── LaunchScreen.storyboard
    │   └── Main.storyboard
    ├── Info.plist
    ├── SettingsViewController.swift
    └── ViewController.swift
└── screenshot.png


/.gitignore:
--------------------------------------------------------------------------------
1 | build/
2 | *.xcworkspace
3 | xcuserdata
4 | .idea/
5 | Build/*
6 | SimpleCalculatorUITests2/
7 | _site/
8 | .DS_Store
9 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
1 | # Simple iOS Calculator
2 | This is a Simple iOS Calculator written in Swift for demonstration purposes in my [blog](https://alexilyenko.github.io/).
3 | 
4 | [![Application live preview][2]][1]
5 | 
6 | [1]: https://alexilyenko.github.io/
7 | [2]: screenshot.png (live preview)
8 | 


--------------------------------------------------------------------------------
/SimpleCalculator.xcodeproj/project.pbxproj:
--------------------------------------------------------------------------------
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--------------------------------------------------------------------------------
/SimpleCalculator.xcodeproj/project.xcworkspace/contents.xcworkspacedata:
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1 | <?xml version="1.0" encoding="UTF-8"?>
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6 |    </FileRef>
7 | </Workspace>
8 | 


--------------------------------------------------------------------------------
/SimpleCalculator.xcodeproj/xcuserdata/alex.xcuserdatad/xcschemes/xcschememanagement.plist:
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12 | 		<key>SimpleCalculatorUITests.xcscheme</key>
13 | 		<dict>
14 | 			<key>orderHint</key>
15 | 			<integer>1</integer>
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--------------------------------------------------------------------------------
/SimpleCalculator/AppDelegate.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  AppDelegate.swift
 3 | //  SimpleCalculator
 4 | //
 5 | //  Created by Alex Ilyenko on 9/19/17.
 6 | //  Copyright © 2017 Alex Ilyenko. All rights reserved.
 7 | //
 8 | 
 9 | import UIKit
10 | 
11 | @UIApplicationMain
12 | class AppDelegate: UIResponder, UIApplicationDelegate {
13 | 
14 |     var window: UIWindow?
15 | 
16 |     func application(_ application: UIApplication,
17 |                      didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
18 |         if !UserDefaults.standard.bool(forKey: "isNotFirstLaunch") {
19 |             //Set autoAdjustSettings and isNotFirstLaunch to true
20 |             UserDefaults.standard.set(false, forKey: "enableWaits")
21 |             UserDefaults.standard.set(true, forKey: "isNotFirstLaunch")
22 | 
23 |             //Sync NSUserDefaults
24 |             UserDefaults.standard.synchronize()
25 |         }
26 | 
27 |         return true
28 |     }
29 | 
30 |     func applicationWillResignActive(_ application: UIApplication) {
31 |     }
32 | 
33 |     func applicationDidEnterBackground(_ application: UIApplication) {
34 |     }
35 | 
36 |     func applicationWillEnterForeground(_ application: UIApplication) {
37 |     }
38 | 
39 |     func applicationDidBecomeActive(_ application: UIApplication) {
40 |     }
41 | 
42 |     func applicationWillTerminate(_ application: UIApplication) {
43 |     }
44 | 
45 | }
46 | 


--------------------------------------------------------------------------------
/SimpleCalculator/Assets.xcassets/AppIcon.appiconset/Contents.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "images" : [
 3 |     {
 4 |       "idiom" : "iphone",
 5 |       "size" : "20x20",
 6 |       "scale" : "2x"
 7 |     },
 8 |     {
 9 |       "idiom" : "iphone",
10 |       "size" : "20x20",
11 |       "scale" : "3x"
12 |     },
13 |     {
14 |       "idiom" : "iphone",
15 |       "size" : "29x29",
16 |       "scale" : "2x"
17 |     },
18 |     {
19 |       "idiom" : "iphone",
20 |       "size" : "29x29",
21 |       "scale" : "3x"
22 |     },
23 |     {
24 |       "idiom" : "iphone",
25 |       "size" : "40x40",
26 |       "scale" : "2x"
27 |     },
28 |     {
29 |       "idiom" : "iphone",
30 |       "size" : "40x40",
31 |       "scale" : "3x"
32 |     },
33 |     {
34 |       "idiom" : "iphone",
35 |       "size" : "60x60",
36 |       "scale" : "2x"
37 |     },
38 |     {
39 |       "idiom" : "iphone",
40 |       "size" : "60x60",
41 |       "scale" : "3x"
42 |     },
43 |     {
44 |       "idiom" : "ipad",
45 |       "size" : "20x20",
46 |       "scale" : "1x"
47 |     },
48 |     {
49 |       "idiom" : "ipad",
50 |       "size" : "20x20",
51 |       "scale" : "2x"
52 |     },
53 |     {
54 |       "idiom" : "ipad",
55 |       "size" : "29x29",
56 |       "scale" : "1x"
57 |     },
58 |     {
59 |       "idiom" : "ipad",
60 |       "size" : "29x29",
61 |       "scale" : "2x"
62 |     },
63 |     {
64 |       "idiom" : "ipad",
65 |       "size" : "40x40",
66 |       "scale" : "1x"
67 |     },
68 |     {
69 |       "idiom" : "ipad",
70 |       "size" : "40x40",
71 |       "scale" : "2x"
72 |     },
73 |     {
74 |       "idiom" : "ipad",
75 |       "size" : "76x76",
76 |       "scale" : "1x"
77 |     },
78 |     {
79 |       "idiom" : "ipad",
80 |       "size" : "76x76",
81 |       "scale" : "2x"
82 |     },
83 |     {
84 |       "idiom" : "ipad",
85 |       "size" : "83.5x83.5",
86 |       "scale" : "2x"
87 |     },
88 |     {
89 |       "idiom": "ios-marketing",
90 |       "size": "1024x1024",
91 |       "scale": "1x"
92 |     }
93 |   ],
94 |   "info" : {
95 |     "version" : 1,
96 |     "author" : "xcode"
97 |   }
98 | }


--------------------------------------------------------------------------------
/SimpleCalculator/Base.lproj/LaunchScreen.storyboard:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 2 | <document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="13122.16" systemVersion="17A277" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
 3 |     <dependencies>
 4 |         <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13104.12"/>
 5 |         <capability name="Safe area layout guides" minToolsVersion="9.0"/>
 6 |         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
 7 |     </dependencies>
 8 |     <scenes>
 9 |         <!--View Controller-->
10 |         <scene sceneID="EHf-IW-A2E">
11 |             <objects>
12 |                 <viewController id="01J-lp-oVM" sceneMemberID="viewController">
13 |                     <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
14 |                         <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
15 |                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
16 |                         <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
17 |                         <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
18 |                     </view>
19 |                 </viewController>
20 |                 <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
21 |             </objects>
22 |             <point key="canvasLocation" x="53" y="375"/>
23 |         </scene>
24 |     </scenes>
25 | </document>
26 | 


--------------------------------------------------------------------------------
/SimpleCalculator/Base.lproj/Main.storyboard:
--------------------------------------------------------------------------------
  1 | <?xml version="1.0" encoding="UTF-8"?>
  2 | <document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="14113" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" colorMatched="YES" initialViewController="Af1-jg-xcu">
  3 |     <device id="retina4_7" orientation="portrait">
  4 |         <adaptation id="fullscreen"/>
  5 |     </device>
  6 |     <dependencies>
  7 |         <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="14088"/>
  8 |         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
  9 |     </dependencies>
 10 |     <scenes>
 11 |         <!--Calculator-->
 12 |         <scene sceneID="tne-QT-ifu">
 13 |             <objects>
 14 |                 <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
 15 |                 <viewController id="BYZ-38-t0r" customClass="ViewController" customModule="SimpleCalculator" customModuleProvider="target" sceneMemberID="viewController">
 16 |                     <layoutGuides>
 17 |                         <viewControllerLayoutGuide type="top" id="aou-mK-uiZ"/>
 18 |                         <viewControllerLayoutGuide type="bottom" id="JEj-ES-y5Q"/>
 19 |                     </layoutGuides>
 20 |                     <view key="view" clipsSubviews="YES" contentMode="scaleAspectFill" id="8bC-Xf-vdC">
 21 |                         <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
 22 |                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
 23 |                         <subviews>
 24 |                             <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" fixedFrame="YES" text="0" textAlignment="right" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="GL3-GI-hbb">
 25 |                                 <rect key="frame" x="6" y="122" width="362" height="100"/>
 26 |                                 <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
 27 |                                 <color key="tintColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
 28 |                                 <fontDescription key="fontDescription" type="system" weight="semibold" pointSize="41"/>
 29 |                                 <color key="textColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
 30 |                                 <color key="highlightedColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
 31 |                             </label>
 32 |                             <button opaque="NO" contentMode="scaleToFill" fixedFrame="YES" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="dI7-o0-ZEC">
 33 |                                 <rect key="frame" x="6" y="258" width="89" height="68"/>
 34 |                                 <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
 35 |                                 <color key="backgroundColor" red="0.87844550609588623" green="0.87840992212295532" blue="0.87842494249343872" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
 36 |                                 <fontDescription key="fontDescription" type="boldSystem" pointSize="15"/>
 37 |                                 <color key="tintColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
 38 |                                 <state key="normal" title="7"/>
 39 |                                 <state key="highlighted">
 40 |                                     <color key="titleColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
 41 |                                 </state>
 42 |                                 <connections>
 43 |                                     <action selector="pressNumber:" destination="BYZ-38-t0r" eventType="touchUpInside" id="330-Dh-Twx"/>
 44 |                                 </connections>
 45 |                             </button>
 46 |                             <button opaque="NO" contentMode="scaleToFill" fixedFrame="YES" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="a0v-A2-OQz">
 47 |                                 <rect key="frame" x="97" y="258" width="89" height="68"/>
 48 |                                 <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
 49 |                                 <color key="backgroundColor" red="0.87844550609588623" green="0.87840992212295532" blue="0.87842494249343872" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
 50 |                                 <fontDescription key="fontDescription" type="boldSystem" pointSize="15"/>
 51 |                                 <color key="tintColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
 52 |                                 <state key="normal" title="8"/>
 53 |                                 <state key="highlighted">
 54 |                                     <color key="titleColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
 55 |                                 </state>
 56 |                                 <connections>
 57 |                                     <action selector="pressNumber:" destination="BYZ-38-t0r" eventType="touchUpInside" id="drc-0o-25S"/>
 58 |                                 </connections>
 59 |                             </button>
 60 |                             <button opaque="NO" contentMode="scaleToFill" fixedFrame="YES" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="m4t-5q-RIH">
 61 |                                 <rect key="frame" x="188" y="258" width="89" height="68"/>
 62 |                                 <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
 63 |                                 <color key="backgroundColor" red="0.87844550609588623" green="0.87840992212295532" blue="0.87842494249343872" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
 64 |                                 <fontDescription key="fontDescription" type="boldSystem" pointSize="15"/>
 65 |                                 <color key="tintColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
 66 |                                 <state key="normal" title="9"/>
 67 |                                 <state key="highlighted">
 68 |                                     <color key="titleColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
 69 |                                 </state>
 70 |                                 <connections>
 71 |                                     <action selector="pressNumber:" destination="BYZ-38-t0r" eventType="touchUpInside" id="sHW-2y-Soa"/>
 72 |                                 </connections>
 73 |                             </button>
 74 |                             <button opaque="NO" contentMode="scaleToFill" fixedFrame="YES" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="caw-WQ-lzi">
 75 |                                 <rect key="frame" x="279" y="258" width="89" height="68"/>
 76 |                                 <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
 77 |                                 <color key="backgroundColor" red="1" green="0.65295285440529682" blue="0.31175848490134328" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
 78 |                                 <fontDescription key="fontDescription" type="boldSystem" pointSize="15"/>
 79 |                                 <color key="tintColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
 80 |                                 <state key="normal" title="/"/>
 81 |                                 <connections>
 82 |                                     <action selector="pressSymbol:" destination="BYZ-38-t0r" eventType="touchUpInside" id="Pfh-kt-sag"/>
 83 |                                 </connections>
 84 |                             </button>
 85 |                             <button opaque="NO" contentMode="scaleToFill" fixedFrame="YES" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="NG3-5R-YxS">
 86 |                                 <rect key="frame" x="6" y="334" width="89" height="68"/>
 87 |                                 <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
 88 |                                 <color key="backgroundColor" red="0.87844550609588623" green="0.87840992212295532" blue="0.87842494249343872" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
 89 |                                 <fontDescription key="fontDescription" type="boldSystem" pointSize="15"/>
 90 |                                 <color key="tintColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
 91 |                                 <state key="normal" title="4"/>
 92 |                                 <state key="highlighted">
 93 |                                     <color key="titleColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
 94 |                                 </state>
 95 |                                 <connections>
 96 |                                     <action selector="pressNumber:" destination="BYZ-38-t0r" eventType="touchUpInside" id="T13-sE-6KR"/>
 97 |                                 </connections>
 98 |                             </button>
 99 |                             <button opaque="NO" contentMode="scaleToFill" fixedFrame="YES" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="bcM-Rs-mLs">
100 |                                 <rect key="frame" x="97" y="334" width="89" height="68"/>
101 |                                 <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
102 |                                 <color key="backgroundColor" red="0.87844550609588623" green="0.87840992212295532" blue="0.87842494249343872" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
103 |                                 <fontDescription key="fontDescription" type="boldSystem" pointSize="15"/>
104 |                                 <color key="tintColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
105 |                                 <state key="normal" title="5"/>
106 |                                 <state key="highlighted">
107 |                                     <color key="titleColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
108 |                                 </state>
109 |                                 <connections>
110 |                                     <action selector="pressNumber:" destination="BYZ-38-t0r" eventType="touchUpInside" id="cKe-Le-RQe"/>
111 |                                 </connections>
112 |                             </button>
113 |                             <button opaque="NO" contentMode="scaleToFill" fixedFrame="YES" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="M6H-zi-yiS">
114 |                                 <rect key="frame" x="188" y="334" width="89" height="68"/>
115 |                                 <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
116 |                                 <color key="backgroundColor" red="0.87844550609588623" green="0.87840992212295532" blue="0.87842494249343872" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
117 |                                 <fontDescription key="fontDescription" type="boldSystem" pointSize="15"/>
118 |                                 <color key="tintColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
119 |                                 <state key="normal" title="6"/>
120 |                                 <state key="highlighted">
121 |                                     <color key="titleColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
122 |                                 </state>
123 |                                 <connections>
124 |                                     <action selector="pressNumber:" destination="BYZ-38-t0r" eventType="touchUpInside" id="kxS-rU-Kew"/>
125 |                                 </connections>
126 |                             </button>
127 |                             <button opaque="NO" contentMode="scaleToFill" fixedFrame="YES" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="3f0-J4-ge1">
128 |                                 <rect key="frame" x="279" y="334" width="89" height="68"/>
129 |                                 <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
130 |                                 <color key="backgroundColor" red="1" green="0.65295285440529682" blue="0.31175848490134328" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
131 |                                 <fontDescription key="fontDescription" type="boldSystem" pointSize="15"/>
132 |                                 <color key="tintColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
133 |                                 <state key="normal" title="*"/>
134 |                                 <connections>
135 |                                     <action selector="pressSymbol:" destination="BYZ-38-t0r" eventType="touchUpInside" id="WE8-eI-3Bl"/>
136 |                                 </connections>
137 |                             </button>
138 |                             <button opaque="NO" contentMode="scaleToFill" fixedFrame="YES" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="FlC-PX-eSb">
139 |                                 <rect key="frame" x="6" y="410" width="89" height="68"/>
140 |                                 <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
141 |                                 <color key="backgroundColor" red="0.87844550609588623" green="0.87840992212295532" blue="0.87842494249343872" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
142 |                                 <fontDescription key="fontDescription" type="boldSystem" pointSize="15"/>
143 |                                 <color key="tintColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
144 |                                 <state key="normal" title="1"/>
145 |                                 <state key="highlighted">
146 |                                     <color key="titleColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
147 |                                 </state>
148 |                                 <connections>
149 |                                     <action selector="pressNumber:" destination="BYZ-38-t0r" eventType="touchUpInside" id="6Nk-jg-V2G"/>
150 |                                 </connections>
151 |                             </button>
152 |                             <button opaque="NO" contentMode="scaleToFill" fixedFrame="YES" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="bjQ-j5-FbL">
153 |                                 <rect key="frame" x="97" y="410" width="89" height="68"/>
154 |                                 <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
155 |                                 <color key="backgroundColor" red="0.87844550609588623" green="0.87840992212295532" blue="0.87842494249343872" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
156 |                                 <fontDescription key="fontDescription" type="boldSystem" pointSize="15"/>
157 |                                 <color key="tintColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
158 |                                 <state key="normal" title="2"/>
159 |                                 <state key="highlighted">
160 |                                     <color key="titleColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
161 |                                 </state>
162 |                                 <connections>
163 |                                     <action selector="pressNumber:" destination="BYZ-38-t0r" eventType="touchUpInside" id="gDz-LN-mVq"/>
164 |                                 </connections>
165 |                             </button>
166 |                             <button opaque="NO" contentMode="scaleToFill" fixedFrame="YES" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="UTl-IM-Pmm">
167 |                                 <rect key="frame" x="188" y="410" width="89" height="68"/>
168 |                                 <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
169 |                                 <color key="backgroundColor" red="0.87844550609588623" green="0.87840992212295532" blue="0.87842494249343872" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
170 |                                 <fontDescription key="fontDescription" type="boldSystem" pointSize="15"/>
171 |                                 <color key="tintColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
172 |                                 <state key="normal" title="3"/>
173 |                                 <state key="highlighted">
174 |                                     <color key="titleColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
175 |                                 </state>
176 |                                 <connections>
177 |                                     <action selector="pressNumber:" destination="BYZ-38-t0r" eventType="touchUpInside" id="Ydb-TT-XjJ"/>
178 |                                 </connections>
179 |                             </button>
180 |                             <button opaque="NO" contentMode="scaleToFill" fixedFrame="YES" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="aWS-mD-jXg">
181 |                                 <rect key="frame" x="279" y="410" width="89" height="68"/>
182 |                                 <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
183 |                                 <color key="backgroundColor" red="1" green="0.65295285440529682" blue="0.31175848490134328" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
184 |                                 <fontDescription key="fontDescription" type="boldSystem" pointSize="15"/>
185 |                                 <color key="tintColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
186 |                                 <state key="normal" title="-"/>
187 |                                 <connections>
188 |                                     <action selector="pressSymbol:" destination="BYZ-38-t0r" eventType="touchUpInside" id="PnH-ug-nRh"/>
189 |                                 </connections>
190 |                             </button>
191 |                             <button opaque="NO" contentMode="scaleToFill" fixedFrame="YES" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="FpC-M1-fbk">
192 |                                 <rect key="frame" x="6" y="486" width="180" height="68"/>
193 |                                 <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
194 |                                 <color key="backgroundColor" red="0.87844550609588623" green="0.87840992212295532" blue="0.87842494249343872" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
195 |                                 <fontDescription key="fontDescription" type="boldSystem" pointSize="15"/>
196 |                                 <color key="tintColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
197 |                                 <state key="normal" title="0"/>
198 |                                 <state key="highlighted">
199 |                                     <color key="titleColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
200 |                                 </state>
201 |                                 <connections>
202 |                                     <action selector="pressNumber:" destination="BYZ-38-t0r" eventType="touchUpInside" id="ldI-Nc-sjf"/>
203 |                                 </connections>
204 |                             </button>
205 |                             <button opaque="NO" contentMode="scaleToFill" fixedFrame="YES" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="L1z-aN-11c">
206 |                                 <rect key="frame" x="97" y="562" width="89" height="68"/>
207 |                                 <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
208 |                                 <color key="backgroundColor" red="0.87844550609588623" green="0.87840992212295532" blue="0.87842494249343872" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
209 |                                 <fontDescription key="fontDescription" type="boldSystem" pointSize="15"/>
210 |                                 <color key="tintColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
211 |                                 <state key="normal" title="."/>
212 |                                 <connections>
213 |                                     <action selector="pressNumber:" destination="BYZ-38-t0r" eventType="touchUpInside" id="Zl6-Kh-ckQ"/>
214 |                                 </connections>
215 |                             </button>
216 |                             <button opaque="NO" contentMode="scaleToFill" fixedFrame="YES" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="LjE-R6-dYS">
217 |                                 <rect key="frame" x="6" y="562" width="89" height="68"/>
218 |                                 <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
219 |                                 <color key="backgroundColor" red="1" green="0.65295285439999995" blue="0.31175848490000002" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
220 |                                 <fontDescription key="fontDescription" type="boldSystem" pointSize="15"/>
221 |                                 <color key="tintColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
222 |                                 <state key="normal" title="AC"/>
223 |                                 <connections>
224 |                                     <action selector="pressReset:" destination="BYZ-38-t0r" eventType="touchUpInside" id="AXy-D9-Wvo"/>
225 |                                 </connections>
226 |                             </button>
227 |                             <button opaque="NO" contentMode="scaleToFill" fixedFrame="YES" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="2P5-pV-F17">
228 |                                 <rect key="frame" x="188" y="562" width="180" height="68"/>
229 |                                 <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
230 |                                 <color key="backgroundColor" red="0.32639792517044497" green="0.32444344657661001" blue="0.32835240376427999" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
231 |                                 <fontDescription key="fontDescription" type="boldSystem" pointSize="15"/>
232 |                                 <color key="tintColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
233 |                                 <state key="normal" title="="/>
234 |                                 <connections>
235 |                                     <action selector="pressCalculate:" destination="BYZ-38-t0r" eventType="touchUpInside" id="e8g-zz-YXx"/>
236 |                                 </connections>
237 |                             </button>
238 |                             <button opaque="NO" contentMode="scaleToFill" fixedFrame="YES" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="V6X-g1-JnH">
239 |                                 <rect key="frame" x="188" y="486" width="180" height="68"/>
240 |                                 <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
241 |                                 <color key="backgroundColor" red="1" green="0.65295285439999995" blue="0.31175848490000002" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
242 |                                 <fontDescription key="fontDescription" type="boldSystem" pointSize="15"/>
243 |                                 <color key="tintColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
244 |                                 <state key="normal" title="+"/>
245 |                                 <connections>
246 |                                     <action selector="pressSymbol:" destination="BYZ-38-t0r" eventType="touchUpInside" id="MTI-Q0-Ogv"/>
247 |                                 </connections>
248 |                             </button>
249 |                         </subviews>
250 |                         <color key="backgroundColor" red="0.57647058823529407" green="0.58039215686274515" blue="0.58823529411764708" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
251 |                     </view>
252 |                     <toolbarItems/>
253 |                     <navigationItem key="navigationItem" title="Calculator" id="Ifu-yz-DXV">
254 |                         <barButtonItem key="rightBarButtonItem" title="Settings" id="UJU-Ra-qVK">
255 |                             <connections>
256 |                                 <segue destination="Xnv-Vf-dWR" kind="push" id="Fgj-Dr-p3T"/>
257 |                             </connections>
258 |                         </barButtonItem>
259 |                     </navigationItem>
260 |                     <simulatedToolbarMetrics key="simulatedBottomBarMetrics"/>
261 |                     <connections>
262 |                         <outlet property="resultLabel" destination="GL3-GI-hbb" id="smX-9u-kgD"/>
263 |                     </connections>
264 |                 </viewController>
265 |             </objects>
266 |             <point key="canvasLocation" x="670.5" y="118.5"/>
267 |         </scene>
268 |         <!--Settings-->
269 |         <scene sceneID="lb8-24-NsC">
270 |             <objects>
271 |                 <viewController id="Xnv-Vf-dWR" customClass="SettingsViewController" customModule="SimpleCalculator" customModuleProvider="target" sceneMemberID="viewController">
272 |                     <layoutGuides>
273 |                         <viewControllerLayoutGuide type="top" id="DiB-BQ-fgg"/>
274 |                         <viewControllerLayoutGuide type="bottom" id="h9q-9X-Hfv"/>
275 |                     </layoutGuides>
276 |                     <view key="view" contentMode="scaleToFill" id="M8k-ap-IYA">
277 |                         <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
278 |                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
279 |                         <subviews>
280 |                             <switch opaque="NO" contentMode="scaleToFill" horizontalHuggingPriority="750" verticalHuggingPriority="750" fixedFrame="YES" contentHorizontalAlignment="center" contentVerticalAlignment="center" on="YES" translatesAutoresizingMaskIntoConstraints="NO" id="sjr-GU-FdV">
281 |                                 <rect key="frame" x="262" y="141" width="49" height="31"/>
282 |                                 <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
283 |                                 <connections>
284 |                                     <action selector="toggleSwitch:" destination="Xnv-Vf-dWR" eventType="valueChanged" id="Hq2-uk-oFx"/>
285 |                                 </connections>
286 |                             </switch>
287 |                             <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" fixedFrame="YES" text="     Enable Waits" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="p4q-Tt-0fq">
288 |                                 <rect key="frame" x="53" y="118" width="269" height="76"/>
289 |                                 <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
290 |                                 <fontDescription key="fontDescription" type="system" pointSize="25"/>
291 |                                 <color key="textColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
292 |                                 <nil key="highlightedColor"/>
293 |                             </label>
294 |                         </subviews>
295 |                         <color key="backgroundColor" red="0.57647058819999997" green="0.58039215690000001" blue="0.58823529409999997" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
296 |                     </view>
297 |                     <navigationItem key="navigationItem" title="Settings" id="M7Z-ou-lps"/>
298 |                     <connections>
299 |                         <outlet property="mySwitch" destination="sjr-GU-FdV" id="5CJ-rr-UOA"/>
300 |                     </connections>
301 |                 </viewController>
302 |                 <placeholder placeholderIdentifier="IBFirstResponder" id="mEx-Jn-4wr" userLabel="First Responder" sceneMemberID="firstResponder"/>
303 |             </objects>
304 |             <point key="canvasLocation" x="1177.5" y="118.5"/>
305 |         </scene>
306 |         <!--Navigation Controller-->
307 |         <scene sceneID="ABf-G7-DlT">
308 |             <objects>
309 |                 <navigationController automaticallyAdjustsScrollViewInsets="NO" id="Af1-jg-xcu" sceneMemberID="viewController">
310 |                     <toolbarItems/>
311 |                     <navigationBar key="navigationBar" contentMode="scaleToFill" insetsLayoutMarginsFromSafeArea="NO" id="eMs-zn-Wc2">
312 |                         <rect key="frame" x="0.0" y="20" width="375" height="44"/>
313 |                         <autoresizingMask key="autoresizingMask"/>
314 |                     </navigationBar>
315 |                     <nil name="viewControllers"/>
316 |                     <connections>
317 |                         <segue destination="BYZ-38-t0r" kind="relationship" relationship="rootViewController" id="tZf-Sm-8x3"/>
318 |                     </connections>
319 |                 </navigationController>
320 |                 <placeholder placeholderIdentifier="IBFirstResponder" id="XXd-lo-LyM" userLabel="First Responder" sceneMemberID="firstResponder"/>
321 |             </objects>
322 |             <point key="canvasLocation" x="83.5" y="118.5"/>
323 |         </scene>
324 |     </scenes>
325 | </document>
326 | 


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/SimpleCalculator/Info.plist:
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 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 3 | <plist version="1.0">
 4 | <dict>
 5 | 	<key>CFBundleDevelopmentRegion</key>
 6 | 	<string>$(DEVELOPMENT_LANGUAGE)</string>
 7 | 	<key>CFBundleExecutable</key>
 8 | 	<string>$(EXECUTABLE_NAME)</string>
 9 | 	<key>CFBundleIdentifier</key>
10 | 	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
11 | 	<key>CFBundleInfoDictionaryVersion</key>
12 | 	<string>6.0</string>
13 | 	<key>CFBundleName</key>
14 | 	<string>$(PRODUCT_NAME)</string>
15 | 	<key>CFBundlePackageType</key>
16 | 	<string>APPL</string>
17 | 	<key>CFBundleShortVersionString</key>
18 | 	<string>1.0</string>
19 | 	<key>CFBundleVersion</key>
20 | 	<string>1</string>
21 | 	<key>LSRequiresIPhoneOS</key>
22 | 	<true/>
23 | 	<key>UILaunchStoryboardName</key>
24 | 	<string>LaunchScreen</string>
25 | 	<key>UIMainStoryboardFile</key>
26 | 	<string>Main</string>
27 | 	<key>UIRequiredDeviceCapabilities</key>
28 | 	<array>
29 | 		<string>armv7</string>
30 | 	</array>
31 | 	<key>UISupportedInterfaceOrientations</key>
32 | 	<array>
33 | 		<string>UIInterfaceOrientationPortrait</string>
34 | 	</array>
35 | 	<key>UISupportedInterfaceOrientations~ipad</key>
36 | 	<array>
37 | 		<string>UIInterfaceOrientationPortrait</string>
38 | 		<string>UIInterfaceOrientationPortraitUpsideDown</string>
39 | 		<string>UIInterfaceOrientationLandscapeLeft</string>
40 | 		<string>UIInterfaceOrientationLandscapeRight</string>
41 | 	</array>
42 | </dict>
43 | </plist>
44 | 


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/SimpleCalculator/SettingsViewController.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  SettingsViewController.swift
 3 | //  SimpleCalculator
 4 | //
 5 | //  Created by Alex Ilyenko on 8/5/18.
 6 | //  Copyright © 2018 Alex Ilyenko. All rights reserved.
 7 | //
 8 | 
 9 | import UIKit
10 | 
11 | class SettingsViewController: UIViewController {
12 | 
13 |     @IBOutlet weak var mySwitch: UISwitch!
14 | 
15 |     override func viewDidLoad() {
16 |         super.viewDidLoad()
17 |         mySwitch.isOn = UserDefaults.standard.bool(forKey: "enableWaits")
18 |     }
19 | 
20 |     @IBAction func toggleSwitch(_ sender: UISwitch) {
21 |         UserDefaults.standard.set(sender.isOn, forKey: "enableWaits")
22 |     }
23 | }
24 | 


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/SimpleCalculator/ViewController.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  ViewController.swift
 3 | //  SimpleCalculator
 4 | //
 5 | //  Created by Alex Ilyenko on 9/19/17.
 6 | //  Copyright © 2017 Alex Ilyenko. All rights reserved.
 7 | //
 8 | 
 9 | import UIKit
10 | 
11 | class ViewController: UIViewController {
12 | 
13 |     static var isWaitEnabled: Bool! = false
14 |     @IBOutlet weak var resultLabel: UILabel!
15 |     private var firstNumber: Double = 0.0
16 |     private var symbol: String = ""
17 |     private var isSymbolPressed: Bool = false
18 |     var settings: SettingsViewController!
19 | 
20 |     override func viewDidLoad() {
21 |         super.viewDidLoad()
22 |         // Do any additional setup after loading the view, typically from a nib.
23 |     }
24 | 
25 |     override func didReceiveMemoryWarning() {
26 |         super.didReceiveMemoryWarning()
27 |         // Dispose of any resources that can be recreated.
28 |     }
29 | 
30 |     @IBAction func pressNumber(_ sender: UIButton) {
31 |         let buttonText = sender.titleLabel?.text!
32 |         let labelText = resultLabel.text!
33 |         if buttonText == "." && labelText.contains(".") {
34 |             return
35 |         }
36 |         if isSymbolPressed {
37 |             resultLabel.text = buttonText
38 |             isSymbolPressed = false
39 |             return
40 |         }
41 |         resultLabel.text =
42 |                 "\((Double(labelText) != 0.0 || labelText.contains(".") || buttonText == ".") ? labelText : "")" +
43 |                         "\(buttonText!)"
44 |     }
45 | 
46 |     @IBAction func pressSymbol(_ sender: UIButton) {
47 |         firstNumber = Double(resultLabel.text!)!
48 |         symbol = (sender.titleLabel?.text)!
49 |         isSymbolPressed = true
50 |     }
51 | 
52 |     @IBAction func pressReset(_ sender: UIButton) {
53 |         wait()
54 |         resultLabel.text = String(0)
55 |         firstNumber = 0.0
56 |         symbol = ""
57 |         isSymbolPressed = false
58 |     }
59 | 
60 |     @IBAction func pressCalculate(_ sender: UIButton) {
61 |         let secondNumber = Double(resultLabel.text!)!
62 |         let result = calculate(secondNumber)
63 |         wait()
64 |         resultLabel.text = String(result)
65 |         firstNumber = 0.0
66 |         symbol = ""
67 |         isSymbolPressed = true
68 |     }
69 | 
70 |     private func calculate(_ secondNumber: Double) -> Double {
71 |         switch symbol {
72 |         case "+": return firstNumber + secondNumber
73 |         case "-": return firstNumber - secondNumber
74 |         case "*": return firstNumber * secondNumber
75 |         case "/": return firstNumber / secondNumber
76 |         default: return Double(resultLabel.text!)!
77 |         }
78 |     }
79 | 
80 |     private func wait() {
81 |         if UserDefaults.standard.bool(forKey: "enableWaits") {
82 |             sleep(2)
83 |         }
84 |     }
85 | }
86 | 


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/screenshot.png:
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https://raw.githubusercontent.com/alexilyenko/SimpleIOSCalculator/8f0b3eb4e1fd16e13dfb890557f6766eae44b03d/screenshot.png


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